Planes be trying to fly underground. Once they are in motion they pop back up again, but when they are stationary the models tend to drop underground, making any structures they are under (like factories) permanently unselectable. I dont know if this is a graphical glitch or if I'm the only one who has it. No other information about the planet specs or whatnot as this was in a GW runthrough. Cheers!
I have noticed the same problem, but it only seems to happen if there is high height variation on the planet. Looking at your screenshot, this might apply to your planet as well.
Cool! Thanks for the information. I was kinda worried my PA got broke on even standard height variations / planets... I know nothing about the actual stats of the planet though. As I said, it was in GW.
